Shewhart, exponentially weighted moving average (EWMA), and cumulative sum (CUSUM) charts are famous statistical tools, to handle special causes and to bring the process back in statistical control. Shewhart charts are useful to detect large shifts, whereas EWMA and CUSUM are more sensitive for small to moderate shifts. In this study, we propose a new control chart, named mixed CUSUM-EWMA chart...

in this paper we introduce a new scheme of censoring and study it under the weibull distribution. this scheme is a mixture of progressive type ii censoring and self relocating design which was first introduced by srivastava [8]. we show the superiority of this censoring scheme (psrd) relative to the classical schemes with respect to “asymptotic variance”. comparisons are also made with respect ...

1 ORIGINAL ARTICLES 2 ABBREVIATIONS 3 DEFINITIONS 4 INTRODUCTION 5 Patient safety 5 Systems perspective 6 Primary health care 7 Laboratory testing 7 Venous blood sample collection 8 Context for blood sample collection 8 The total testing process 9 The preanalytical phase 11 Patient preparation 11 Patient identification 12 Test request management 12 Test tube labelling 13 Sample collection and h...

Abstract Background Randomization is the foundation of any clinical trial involving treatment comparison. It helps mitigate selection bias, promotes similarity groups with respect to important known and unknown confounders, contributes validity statistical tests. Various restricted randomization procedures different probabilistic structures properties are available. The goal this paper present ...